/Engine/Source/Developer/ShaderFormatOpenGL/Public/ShaderFormatOpenGL.h
Create the compiling backend
virtual [FGlslCodeBackend](API\Developer\ShaderFormatOpenGL\FGlslCodeBackend) * CreateBackend ( [GLSLVersion](API\Developer\ShaderFormatOpenGL\GLSLVersion) Version, uint32 CCFlags, EHlslCompileTarget HlslCompilerTarget )